Planning for the weather is a good way to make your trip to Coleville relaxing and enjoyable, especially when you’re splurging. The hottest months are usually July and August, with an average temperature of 15°C, while the coldest months are February and December, with an average of -3°C. The snowiest months in Coleville are March, February, January and April, with each month seeing an average of 92 cm of snowfall.